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Ingress Protection Chart

The Ingress Protection (IP) for all low voltage enclosures up to 1000 V a.c. and 1500 V d.c. is defined in identical fashion by the standards EN 60529 - IEC 529 it comprises the letters IP followed by two character numerals and or additional/supplementary letters.
CODE LETTER
International Protection

1ST NUMERAL 0-6, or letter X
Protection of persons by prevention or limiting ingress of parts of the human body or solid objects

2ND NUMERAL 0-8, or letter X
Resistance to ingress of water

ADDITIONAL LETTER (Optional)
Enhanced personnel protection
A: up to the guard / stop face of 50.0mm shere
B: up to the guard / stop face of test finger
C: up to the guard / stop faceof 2.5mm x 100.0mm probe
D: up to the guard / stop face 1.0mm x 100.omm probe.

SUPPLEMENTARY LETTER (Optional)
For specific applications.
H: High Voltage equipment
M: Moving or rotating equipment (tested whilst in motion)
S: Moving or rotating equipment (tested whilsts at rest)
W: Weather Conditions
(Agreed between Manufacturer and User)
The first character numeral indicates the degree of protection provided by the enclosure against access to hazardous parts by preventing or limiting the ingress of a part of the human body or an object held by a person and ingress of solid foreign objects.

The first character numeral:

Protection against foreign objects
IP Description
0
 
Non-protected
1
 
Protected against solid objects ≥ than 50mm
2
 
Protected against solid objects ≥ than 12.5mm
3
 
Protected against solid objects ≥ than 2.5mm
4
 
Protected against solid objects ≥ than 1.0mm
5
 
Dust-protected
6
 
Dust-tight
The second character numeral indicates the degree of protection provided by the enclosure with respect to harmful effects on the equipment due to the ingress of water. An X signifies that the tests are not applicable to the product.

The second character numeral:

Protection against ingress of water with harmful effects
IP Description
0
 
 
1
 
Protected against dripping water
2
 
Protected against dripping water when tilted up to 15º
3
 
Protected against spraying water
4
 
Protected against splashing water
5
 
Protected against jetting
6
 
Protected against powerful jetting
7
 
Protected against the effect of temporary immersion
8
 
Protected against continuous immersion

Additional letter (in option)

Protection of people against access to hazardous parts
 Description
A
Protected against access to hazardous parts with the back of the hand
B
Protected against access to hazardous parts with a finger
C
Protected against access to hazardous parts with a tool - ø 2.5mm
D
Protected against access to hazardous parts with a tool - ø 1mm

Additional letter (in option)

Specific information on the product
 Description
H
High voltage apparatus
M
Motion during water test
S
Stationary during water test
W
Weather conditions